High Performance Synchronization Algorithm in U-OFDM Based Visible Light Communications

doi:10.13190/j.jbupt.2016.06.012

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2016, Vol. 39 ›› Issue (6): 62-66.doi: 10.13190/j.jbupt.2016.06.012

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High Performance Synchronization Algorithm in U-OFDM Based Visible Light Communications

HUO Jia-hao, ZHOU Xian, HUANGFU Wei, TU Jia-jing, DU Zhi-yuan

Beijing Engineering and Technology Research Center for Convergence Networks and Ubiquitous Services, University of Science and Technology Beijing, Beijing 100083, China

Received:2015-12-04 Online:2016-12-28 Published:2016-11-29

Abstract

Abstract: Visible light communications is a new type of wireless communications technology. Combined with lighting and communications, it has characteristics of energy efficiency, rich frequency domain resources with no electromagnetic radiation, and so forth. In order to improve the transmission efficiency of optical communication system and resist multipath effect in free space transmission, unipolar orthogonal frequency division multiplexing technique (U-OFDM) was studied in detail. Due to the unipolar characteristics of U-OFDM signal, there is no specific synchronization algorithm. Therefore, a new synchronization algorithm-negative mirror image was proposed. This algorithm can achieve desired effect of synchronization in low signal to noise ratio.

Key words: visible light communications, unipolar orthogonal frequency division multiplexing technique, synchronization algorithm, negative mirror image algorithm

CLC Number:

TN911.22

HUO Jia-hao, ZHOU Xian, HUANGFU Wei, TU Jia-jing, DU Zhi-yuan. High Performance Synchronization Algorithm in U-OFDM Based Visible Light Communications[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2016, 39(6): 62-66.

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High Performance Synchronization Algorithm in U-OFDM Based Visible Light Communications

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